perco

Percolation coefficient

The percolation coefficient is input to limit percolation from the bottom soil layer due to an impermeable layer or high water table. Since percolation can be a slow process, that can occur over days or weeks, the percolation coefficient is non-linear and difficult to parameterize and calibrate.

A perco value of 0.0 does not allow any percolation from the soil and a value of 1.0 does not restrict percolation from the bottom soil layer.